Naomi Campbell is suffering "litigation exhaustion" and has pulled out of her latest court case, incurring an estimated £300,000 legal bill.

The 39-year-old model discontinued her case against Vanessa Frisbee, a former personal assistant, whom she had accused of breaching confidentiality by selling a story about her in 2000 to the News of the World for £25,000.

Miss Campbell has appeared in a number of court hearings over the past 10 years. She has run up convictions for assault and won a House of Lords privacy case against the Mirror in 2004 after photos of her leaving a Narcotics Anonymous meeting were published.

But today Master Bowles, a High Court official hearing her confidentiality case, said that while he could understand the model's "exhaustion with litigation" she must still pay 90 per cent of Miss Frisbee's legal costs.

Miss Campbell will also have to pay her own legal team, headed by Heather Rogers QC.